Formation and superconducting properties of As grown Bi-Ca-Sr-Cu-O films by AC sputtering

H. C. Yang; H. C. Chen; H. E. Horng; J. C. Yu

doi:10.1088/0953-2048/4/1S/114

Formation and superconducting properties of As grown Bi-Ca-Sr-Cu-O films by AC sputtering

H. C. Yang^*, H. C. Chen, H. E. Horng, J. C. Yu

^*Corresponding author for this work

Undergraduate Program of Electro-Optical Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The authors have in situ grown Bi-Ca-Sr-Cu-O films by ac sputtering. The substrates were heated to 630-670 degrees C during ac sputtering. The sputtering was first carried out in a mixture of Ar(70%) and O₂(30%) at a pressure of 0.2 mbar. Then the mixture of Ar(70%) and O₂(30%) was replaced by pure O₂ and the sputtering was kept for another one hour. Superconducting Bi₂CaSr₂Cu₂O_y (2122) films with zero resistance at 70-75 K can be reproduced. The critical fields of the as grown films parallel to c-axis and ab-plane has been measured. The estimated zero temperature coherence lengths are zeta _c=3.3 AA and zeta _ab=36.1 AA respectively for the (2122) phase.

Original language	English
Article number	114
Pages (from-to)	S385-S387
Journal	Superconductor Science and Technology
Volume	4
Issue number	1 S
DOIs	https://doi.org/10.1088/0953-2048/4/1S/114
Publication status	Published - 1991

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/4/1S/114

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title = "Formation and superconducting properties of As grown Bi-Ca-Sr-Cu-O films by AC sputtering",

abstract = "The authors have in situ grown Bi-Ca-Sr-Cu-O films by ac sputtering. The substrates were heated to 630-670 degrees C during ac sputtering. The sputtering was first carried out in a mixture of Ar(70%) and O2(30%) at a pressure of 0.2 mbar. Then the mixture of Ar(70%) and O2(30%) was replaced by pure O2 and the sputtering was kept for another one hour. Superconducting Bi2CaSr2Cu2Oy (2122) films with zero resistance at 70-75 K can be reproduced. The critical fields of the as grown films parallel to c-axis and ab-plane has been measured. The estimated zero temperature coherence lengths are zeta c=3.3 AA and zeta ab=36.1 AA respectively for the (2122) phase.",

author = "Yang, {H. C.} and Chen, {H. C.} and Horng, {H. E.} and Yu, {J. C.}",

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AU - Yang, H. C.

AU - Chen, H. C.

AU - Horng, H. E.

AU - Yu, J. C.

PY - 1991

Y1 - 1991

N2 - The authors have in situ grown Bi-Ca-Sr-Cu-O films by ac sputtering. The substrates were heated to 630-670 degrees C during ac sputtering. The sputtering was first carried out in a mixture of Ar(70%) and O2(30%) at a pressure of 0.2 mbar. Then the mixture of Ar(70%) and O2(30%) was replaced by pure O2 and the sputtering was kept for another one hour. Superconducting Bi2CaSr2Cu2Oy (2122) films with zero resistance at 70-75 K can be reproduced. The critical fields of the as grown films parallel to c-axis and ab-plane has been measured. The estimated zero temperature coherence lengths are zeta c=3.3 AA and zeta ab=36.1 AA respectively for the (2122) phase.

AB - The authors have in situ grown Bi-Ca-Sr-Cu-O films by ac sputtering. The substrates were heated to 630-670 degrees C during ac sputtering. The sputtering was first carried out in a mixture of Ar(70%) and O2(30%) at a pressure of 0.2 mbar. Then the mixture of Ar(70%) and O2(30%) was replaced by pure O2 and the sputtering was kept for another one hour. Superconducting Bi2CaSr2Cu2Oy (2122) films with zero resistance at 70-75 K can be reproduced. The critical fields of the as grown films parallel to c-axis and ab-plane has been measured. The estimated zero temperature coherence lengths are zeta c=3.3 AA and zeta ab=36.1 AA respectively for the (2122) phase.

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Formation and superconducting properties of As grown Bi-Ca-Sr-Cu-O films by AC sputtering

Abstract

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